MLB Daily DeltaWeek 15 · July 5, 2026
Portrait of David Peterson
David Peterson
CHC · P
Change to
Portrait of Tatsuya Imai
Tatsuya Imai
HOU · P
Change to
Who's more valuable, rest of season

Tatsuya Imai.

He projects to help you in more roto categories the rest of the way — ERA, WHIP, and wins. David Peterson’s box score looks better right now, but the luck-stripped projection flips it.

Head-to-head
K
ERA
WHIP
W
SV n/a

Tatsuya Imai wins 3 categories (ERA, WHIP, W); David Peterson wins 1 (K); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
David Peterson
92.2
Tatsuya Imai
94.9
Swinging-Strike %lg 11.0% · higher = better
David Peterson
10.0%
Tatsuya Imai
13.8%
Strikeout %lg 22.0% · higher = better
David Peterson
18.8%
Tatsuya Imai
27.9%
Chase %lg 28.5% · higher = better
David Peterson
30.3%
Tatsuya Imai
26.6%
Hard-Hit % Allowedlg 40.0% · lower = better
David Peterson
42.2%
Tatsuya Imai
46.3%
Barrel % Allowedlg 8.0% · lower = better
David Peterson
6.6%
Tatsuya Imai
10.7%
xwOBA Allowedlg .315 · lower = better
David Peterson
.347
Tatsuya Imai
.340
stabilized — trust it · small sample yet · dashed = league avg · right = better
05

The tape

Rest-of-season projection · bold = leads
rest-of-season projection current season projection range
Rate · earned-run quality
ERAlower is better
David Peterson
4.255.88
lg xERA 4.10
now 5.18
4.76
Tatsuya Imai
4.255.88
lg xERA 4.10
now 5.52
4.61
WHIPlower is better
David Peterson
1.271.68
now 1.59
1.45
Tatsuya Imai
1.271.68
now 1.36
1.43

Volume · rest of season
Strikeoutshigher is better
David Peterson
4086.80
now 56
70
Tatsuya Imai
4086.80
now 28
49
Winshigher is better
David Peterson
.8006.20
now 3
25
Tatsuya Imai
.8006.20
now 2
35

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
SellDavid Peterson — sell.conf 0.86
SellTatsuya Imai — sell.conf 0.79
Tweet